光子学报, 2015, 44 (9): 0911003, 网络出版: 2015-10-22  

望远镜扩展成像像质方法研究

Image Quality Evaluation on Extended Imaging of Telescopes
作者单位
1 中国科学院光电技术研究所, 成都 130033
2 中国科学院大学, 北京 100049
3 西北核技术研究所, 西安 710024
摘要
现有评价方法单独针对噪声或模糊全景图像, 不能满足望远镜扩展成像评价需求, 为此, 结合望远镜成像机理特性, 设计并提出了一种对比度与结构相似度下的无参考成像像质评价方法.给出了该方法的基本原理、具体实现流程以及数学模型, 并结合仿真图像与实测图像对所提方法进行有效性验证, 结果表明: 所提出的评价方法可以给出序列离焦图像、噪声图像以及离焦噪声图像的有效定量评价值, 评价结果接近于人眼的视觉特性.该方法实现了对同时受到噪声与模糊影响扩展望远镜成像像质的有效定量评价, 评价结果具有高的准确性、单调性以及一致性.
Abstract
Based on the defects of single noises analysis or blur analysis in image quality evaluation, combined with telescope extended imaging characteristics, an image quality evaluation method under contrast and Structural similarity was designed and proposed, the basic principle, the specific implementation process as well as mathematical models of this method was given. The simulation image and measured image were used to validate the proposed method, validation results show that: the proposed evaluation method can give an effective evaluation value on sequence defocused image, noise image, defocused and noising image, the evaluation results close to human visual characteristics. The method can evaluate the image affected by noise and blur simultaneously effectively, and can give effective quantitative evaluation value. The evaluation results have high accuracy, monotony and consistency.

谭碧涛, 陈洪斌, 王继红. 望远镜扩展成像像质方法研究[J]. 光子学报, 2015, 44(9): 0911003. TAN Bi-tao, CHEN Hong-bin, WANG Ji-hong. Image Quality Evaluation on Extended Imaging of Telescopes[J]. ACTA PHOTONICA SINICA, 2015, 44(9): 0911003.

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